Update app.py

app.py

@@ -65,7 +65,7 @@ AUDIO_CACHE_DIR = "audio_cache"
 AUDIO_DIR = "audio_logs"
 
 # World Builder Constants
-SAVED_WORLDS0 = "saved_worlds"
+SAVED_WORLDS_DIR = "saved_worlds"  # Corrected from SAVED_WORLDS0
 HISTORY_LOG_DIR = "history_logs"
 PLOT_WIDTH = 50.0
 PLOT_DEPTH = 50.0
@@ -104,7 +104,8 @@ def get_current_time_str(tz='UTC'):
     return now_aware.strftime('%Y%m%d_%H%M%S')
 
 def clean_filename_part(text, max_len=30):
-    if not isinstance(text, str): text = "invalid_name"
+    if not isinstance(text, str):
+        text = "invalid_name"
     text = re.sub(r'\s+', '_', text)
     text = re.sub(r'[^\w\-.]', '', text)
     return text[:max_len]
@@ -127,6 +128,15 @@ def run_async(async_func, *args, **kwargs):
 def ensure_dir(dir_path):
     os.makedirs(dir_path, exist_ok=True)
 
+def generate_filename(content, username, extension):
+    timestamp = get_current_time_str()
+    content_hash = hashlib.md5(content[:150].encode()).hexdigest()[:6]
+    clean_username = clean_filename_part(username)
+    return f"{clean_username}_{timestamp}_{content_hash}.{extension}"
+
+def format_timestamp_prefix(prefix):
+    return f"{prefix}_{get_current_time_str()}"
+
 # ==============================================================================
 # World State File Handling (Markdown + JSON)
 # ==============================================================================
@@ -1053,7 +1063,7 @@ def render_main_content():
             parsed = parse_world_filename(os.path.join(SAVED_WORLDS_DIR, current_file_basename))
             save_label = f"Save Changes to '{parsed['name']}'"
             if st.button(save_label, key="save_current_world", help=f"Overwrite '{current_file_basename}'"):
-                with st.spinner(f"Overwriting {現在の_file_basename}..."):
+                with st.spinner(f"Overwriting {current_file_basename}..."):
                     if save_world_state_to_md(current_file_basename):
                         st.success("Current world saved!")
                     else: